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Anyone running ECUMasters DET3 on their IS?

Joined
May 15, 2025
Messages
7
Wondering if anyone here has experience using the ECUMasters DET3 on their ride? I've been toying with the idea of adding one to my setup mainly for better fuel/ignition control and maybe a bit of boost management down the line. I know the DET3 can run in piggyback or full standalone mode, which is pretty appealing. For now, I'd likely go piggyback just to keep things manageable. But how well does it play with the IS ECU, especially around idle control, timing, and OBD2 quirks.

Thanks in advance, also please, very important, trying to keep things budget friendly but functional.
 
Wondering if anyone here has experience using the ECUMasters DET3 on their ride? I've been toying with the idea of adding one to my setup mainly for better fuel/ignition control and maybe a bit of boost management down the line. I know the DET3 can run in piggyback or full standalone mode, which is pretty appealing. For now, I'd likely go piggyback just to keep things manageable. But how well does it play with the IS ECU, especially around idle control, timing, and OBD2 quirks.

Thanks in advance, also please, very important, trying to keep things budget friendly but functional.
Yeah the DET3 can run in piggyback as I tried in my old IS as long as you take the time to dial it in right. Be careful because the idle control might get weird if you're not careful with your maps, but guaranteed timing and boost adjustments are smooth once it's set. OBD2 can be inconsistent so don't be surprised if your scanner is quite weirding out. GL mate.
 
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